Introducing the Gooby Escape Free Harness. When a dog tries to pull out of the harness, it tightens up and reduces the extra space a dog can use to get out of a harness. Available in 3 sizes (sm/md/large) in 4 colors (orange/purple/blue/red) these are designed with the small dog in mind. For the Escape Free harness, get your sizing information here: https://www.goobypet.com/pages/sizing-guide For the Escape Free harness, learn more here: https://www.goobypet.com/pages/escap